My dear Mr. I-raikeater: 
/ 
July t 'S , 1? 23. 
Please help me if you can to an under¬ 
standing; of the species 1 have called Eplder&rusi crlstohalen* 
3e * * iLav ° heen working up the group to make a detenain* 
. 
ation of you 129 
